Repeater嵌套无法将类型为“System.Data.DataRow”的对象强制转换为类型“System.Data.DataRowView

在Repeater的多重嵌套情况下，出现了无法将类型为“System.Data.DataRow”的对象强制转换为类型“System.Data.DataRowView的错误，解决办法如下：

<table style="width:100%;border:0;">
    <asp:repeater id="Repeater1" runat="server">
    <itemtemplate>                 
    <tr style="font-family: 黑体; font-size: 100; color: #FFFFFF; background-color: #008080; font-weight: bold;"><td><%=GetChineseOrderByNumber()%>.<%#  DataBinder.Eval(Container.DataItem, "Question_type_name")%></td>
        <td><img src ="../images/plus.gif"  align="right" style="cursor:pointer;" onclick ="if(this.src.indexOf('minus.gif') != -1) {this.src='../images/plus.gif';document.getElementById('tbSingleSelect').style.display='none';} else {this.src='../images/minus.gif';document.getElementById('tbSingleSelect').style.display='';}"/> </td>
    </tr>
    <tr ><td colspan=2>
        <!-- 单选题处理 -->
        <table id="tbSingleSelect">
            <asp:repeater id="repSingleSelect" runat="server" datasource='<%#((DataRowView)Container.DataItem).Row.GetChildRows("rel_question_type")%>' >
              <itemtemplate>
                <tr class ="color1" style="font-family: 宋体, Arial, Helvetica, sans-serif; font-size: x-small; font-weight: bold; font-variant: small-caps">
                  <td><%# DataBinder.Eval(Container.DataItem, "[/"Disp_order/"]")%> .<%# DataBinder.Eval(Container.DataItem, "[/"Question_Text/"]")%> </td>
                 <td ><div id='div<%# DataBinder.Eval(Container.DataItem, "[/"Question_id/"]")%>'style="Display:inline">3333</div></td>
                </tr>
                <tr><td>
                <table>
                <asp:repeater id="repSingleSelectChild" runat="server" datasource='<%#((DataRow)Container.DataItem).GetChildRows("rel_question")%>'>
                  <itemtemplate>
                   <tr class ="color1" style="font-family: 宋体, Arial, Helvetica, sans-serif; font-size: x-small; font-weight: normal; font-variant: small-caps;">
                    <td>        
                        <input type="radio" id='radio<%# DataBinder.Eval(Container.DataItem, "[/"Question_id/"]")%>_<%# DataBinder.Eval(Container.DataItem, "[/"Question_id/"]")%>' name='<%# DataBinder.Eval(Container.DataItem, "[/"Question_id/"]")%> 'onclick="setOptionValue('div<%# DataBinder.Eval(Container.DataItem, "[/"Question_id/"]")%>','<%# DataBinder.Eval(Container.DataItem, "[/"Option_id/"]")%>')"/>
                        <%# DataBinder.Eval(Container.DataItem, "[/"Option_id/"]")%>.<%# DataBinder.Eval(Container.DataItem, "[/"Option_text/"]")%>
                    </td>
                   </tr>
                  </itemtemplate>
                </asp:repeater>
                  </table>
                  </td>
                </tr>
              </itemtemplate>
            </asp:repeater>
        </table>
    </td></tr>

</table>